The PSNI has released three people who were being questioned over the murder of Robbie Lawlor in Belfast at the weekend.
Two men, aged 30 and 33, and a 17-year-old boy were questioned by detectives investigating the shooting at Etna Drive in north Belfast on Saturday 4 April.
All three have now been released unconditionally.
A 27-year-old man who had also been questioned was released unconditionally yesterday.
The PSNI believes a single gunman fired several shots at Lawlor, who was a suspect in the murder of 17-year-old Keane Mulready-Woods from Drogheda earlier this year, but the murder weapon has not been recovered.
Lawlor was well known to gardaí for his involvement in serious and organised crime.
He had more than 100 previous convictions and had been released from prison last December.
The PSNI is appealing for anyone with information about the murder to contact them.
They are also appealing for anyone with CCTV, dash-cam or mobile-phone footage recorded in the area of Etna Drive and Kingston Court on Saturday to contact them.
